ET MALWARE DirectsX Checkin Response

Query · suricata

flow:established,from_server;
stream_size:server,<,30;
dsize:25;
content:"|19 00 00 00|"; offset:17; depth:4;
content:!"|00 00|"; within:2;
content:!"|ff ff|"; within:2;
content:!"_loc";
Raw source ET MALWARE DirectsX Checkin Response · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE DirectsX Checkin Response";
    flow:established,from_server;
    stream_size:server,<,30;
    dsize:25;
    content:"|19 00 00 00|"; offset:17; depth:4;
    content:!"|00 00|"; within:2;
    content:!"|ff ff|"; within:2;
    content:!"_loc";
    reference:url,public.gdatasoftware.com/Presse/Publikationen/Whitepaper/EN/GDATA_TooHash_CaseStudy_102014_EN_v1.pdf;
    classtype:command-and-control;
    sid:2019633; rev:3;
    metadata:created_at 2014_11_04, signature_severity Major, updated_at 2022_05_11;
)

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